Coordinate Geometry and Traverse Surveying Faculty of Applied Engineering and Urban Planning Civil Engineering Department Lecture 8 - Week 5 2 nd Semester.

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Presentation transcript:

Coordinate Geometry and Traverse Surveying Faculty of Applied Engineering and Urban Planning Civil Engineering Department Lecture 8 - Week 5 2 nd Semester 2007/2008 UP Copyrights 2007 Engineering Control and Surveying

Introduction to Coordinate Systems World and Local Coordinates Coordinate Geometry Transformation of Coordinates Traverse Surveying Content

Transformation of Coordinates

In order to transform from local coordinates to the national coordinates:

Questions

Traverse Surveying

Purpose of the surveying: Property surveys to establish boundaries Location and construction layout surveys for highways, railways and other works Providing ground control points for photogrammetric mapping

Questions

Types of Traverse Open traverse: starts at known point and ends with unknown one.

Types of Traverse Closed traverse: starts at known point and ends with unknown one.

Choice of Traverse As close as possible to the details Distances shall be equal between stations Insure durability of stations No sight obstructions

Traverse Computations How to calculate the azimuth of a line

Traverse Computations How to calculate the azimuth of a line

Traverse Computations How to calculate the azimuth of a line

Questions

Traverse Computations Error Correction

Traverse Computations Error Correction To do so, two corrections are required: 1.Angle Correction 2.Position Correction

Traverse Computations 1) Angle Correction

Traverse Computations 1) Angle Correction

Questions

Traverse Computations 2) Position Correction Compass Rule (Bowditch Rule)

Questions

Traverse Computations Allowable Errors in Traverse Surveying

Questions

Example 7.9

Homework: Solve the example using procedure stated in the approach

Example 7.9

Questions

Example 7.10